feat: add initializeApp and defaultJasprOptions

[schultek]

Description

• @client components nolonger need a part file
• a lib/jaspr_options.dart file is generated instead
• initializeApp() must be called now before runApp()

TODO:

• [x] Update templates
• [x] Fix jasprpad
• [x] Update docs

Type of Change

• [x] ❌ Breaking change
• [x] ✨ New feature or improvement
• [ ] 🛠️ Bug fix
• [ ] 🧹 Code refactor
• [ ] 📝 Documentation
• [ ] 🗑️ Chore

[docs-page[bot]]

To view this pull requests documentation preview, visit the following URL:

docs.page/schultek/jaspr~160

Documentation is deployed and generated using docs.page.

[github-actions[bot]]

Package Version Report

The following packages have been updated: jaspr : 0.9.3 -> 0.10.0 jaspr_builder : 0.9.3 -> 0.10.0 jaspr_cli : 0.9.3 -> 0.10.0 jaspr_flutter_embed : 0.1.4 -> 0.1.5 jaspr_riverpod : 0.3.8 -> 0.3.9 jaspr_router : 0.3.0 -> 0.3.1 jaspr_test : 0.9.3 -> 0.10.0

[codecov[bot]]

Codecov Report

Attention: 76 lines in your changes are missing coverage. Please review.

Comparison is base (ebda069) 61.37% compared to head (c97e919) 59.05%. Report is 1 commits behind head on main.

Files	Patch %	Lines
packages/jaspr/lib/src/foundation/events.dart	0.00%	25 Missing :warning:
packages/jaspr/lib/src/server/run_app.dart	0.00%	15 Missing :warning:
...ackages/jaspr/lib/src/server/render_functions.dart	55.17%	13 Missing :warning:
packages/jaspr/lib/src/ui/html/forms.dart	0.00%	12 Missing :warning:
packages/jaspr/lib/src/foundation/options.dart	25.00%	6 Missing :warning:
packages/jaspr/lib/src/server/server_binding.dart	33.33%	2 Missing :warning:
...s/jaspr/lib/src/server/document/base_document.dart	50.00%	1 Missing :warning:
...aspr/lib/src/server/document/document_binding.dart	66.66%	1 Missing :warning:
packages/jaspr/lib/src/ui/html/html.dart	0.00%	1 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #160 +/- ## ========================================== - Coverage 61.37% 59.05% -2.32% ========================================== Files 97 99 +2 Lines 4041 4110 +69 ========================================== - Hits 2480 2427 -53 - Misses 1561 1683 +122 ```

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